Resistance to sulfidation of the catalytic reduction of NOx over Ag/Al2O3 by controlling the loadings of Ag and Ag+

被引：14
|
作者：
Ke, Rui [1 ]
Chen, Qiang
Li, Junhua
Zhu, Yongqing
Hao, Jiming
机构：
[1] Tsinghua Univ, Dept Mech Engn, Beijing, Peoples R China
[2] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 03期
基金：
中国国家自然科学基金;
关键词：
non-thermal plasma; selective catalytic reduction; lean burn; NOx; Ag/gamma-Al2O3; propene;
D O I：
10.1016/j.catcom.2006.05.015
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
SO2 strongly decreased the catalytic activities of low loading Ag/Al2O3 below 500 degrees C in selective catalytic reduction (SCR) of NOx by propene with or without the assistance of non-thermal plasma (NTP), which was mainly attributed to the competition between SO2 and NO. By controlling the loadings of Ag and Ag+ over alumina, the resistance of SO2 was remarkably enhanced between 400 degrees C and 500 degrees C in thermal SCR. In the NTP-assisted SCR, most of the NOx conversions were also apparently recovered from 250 degrees C to 500 degrees C. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：589 / 592
页数：4
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